Aborting an Installation

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Hi,

How do I check to see if an application has already been installed and if it
has abort installing is again?

Thanks

Ken Stone

[NewsArchive]

Ken,

> How do I check to see if an application has already been installed and if it
> has abort installing is again?

You could create a key in either HKLM (or HKCU)

HKEY_LOCAL_MACHINE\SOFTWARE\<company>\<product> and simply check for
that key or, if you wanted, place the last installed version so you
can compare. Of course the version could/should be a version resource
in your program EXE.<g>

If you need to bail use the "Exit Installation" control statement.

--
Lee White

Enroll Today at http://CWaddons.com

[NewsArchive]

As Lee said...
SetupBuilder creates a GUID for each new product you create (Project |
Settings | Product | PRODUCTGUID )
So you could put that in a Registry key and check for it.

If your product uses Add/Remove Programs support, your productguid will
*automatically* be stashed in the Registry
(HKLM\Software\Microsoft\Windows\CurrentVersion\Un install on a 32-bit
machine) and you can test for it automatically using the Detect Previous
Version script function.

If you don't use Add/Remove and haven't stashed the GUID yourself, you could
always do a brute-force search for your .exe using the Search for File
script function... but that would certainly slow down your installation.

Jane